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Alcatel-Lucent 4A0-101 Exam
4A0-101 Alcatel-Lucent Interior Routing Protocols and High Availability (Page 4 )

Updated On: 1-Feb-2026
Page 4 of 37
PDF with 315 Questions

What is another term to describe the default route for a client?

  1. Black hole
  2. Default gateway
  3. Gateway path
  4. Proxy ARP

Answer(s): B



Click the exhibit button



The 192 168 3.0/24 network is learned on router R1 via IS-IS Given the OSPF configuration shown, and assuming that the OSPF adjacency between routers R1 and R3 is up, why is the 192 168.3.0/24 route not in router R3's route table? (Choose two)

  1. The route policy should be applied as in import policy
  2. The no-redistribute-external command is used on router R1
  3. The route policy is incorrect. It should say "from protocol ISIS" rather than "from protocol direct".
  4. It is not possible to be an ASBR and an NSSA. The ASBR configuration should be removed.
  5. The interface between routers R1 and R3 needs to be in OSPF area 0 rather than OSPF area 1 because a backbone area must always exist.

Answer(s): B,C



Which of the following best describes the actions after an IS-IS router receives on a broadcast interface, a newer LSP than the one in its database?

  1. The router sends a copy of the LSP from its database to its neighbor
  2. The router updates its database with the LSP and floods a copy to its other neighbors.
  3. The router updates its database with the LSP, acknowledges the LSP with a PSNP and floods a copy to its other neighbors.
  4. The router updates its database with the LSP and acknowledges it with a PSNP.

Answer(s): B



Refer to the exhibit.



Assume that OSPFv3 is properly configured on all routers and that R4 advertises its system prefix into Area 0. Which of the following statements best describes how R5 learns R4's IPv6 system prefix?

  1. With a Router LSA originated by R1
  2. With a Router LSA originated by R5
  3. With a Router LSA originated by R4
  4. With an Inter-Area Prefix LSA originated by R1
  5. With an Inter-Area Prefix LSA originated by R5
  6. With an Inter-Area Prefix LSA originated by R4

Answer(s): D



Click the exhibit button.


192.168.3.1 is a loopback interface on router R2 and is distributed to OSPF area 0, but the ping fails from router R3. Which of the following is a possible solution to the problem?

  1. Add the "originate-default-route" option in the NSSA area configuration on router R3
  2. Add the "summaries" option to the NSSA area configuration on router R1
  3. Make a static route on router R1 to 192.168.3.1
  4. Make a default route on router R2

Answer(s): B



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